/Engine/Source/Runtime/Core/Public/Math/Vector.h
Find good arbitrary axis vectors to represent U and V axes of a plane, using this vector as the normal of the plane.
void FindBestAxisVectors ( [TVector](API\Runtime\Core\Math\TVector)< T > & Axis1, [TVector](API\Runtime\Core\Math\TVector)< T > & Axis2 ) const